function getIdentityInfo(identity) {
  code = identity.replace(/^\s*|\s*$/g, "");
  // console.log('trim: ' + code);
  var zoneCode = {
    11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古",
    21: "辽宁", 22: "吉林", 23: "黑龙江", 31: "上海", 32: "江苏",
    33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东",
    41: "河南", 42: "湖北", 43: "湖南", 44: "广东", 45: "广西",
    46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南",
    54: "西藏", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏",
    65: "新疆", 71: "台湾", 81: "香港", 82: "澳门"
  };
  if(!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)){
    alert("身份证号格式错误");
    return null;
  }
  if(!zoneCode[code.substring(0,2)]){
    alert("地址编码错误");
    return null;
  }
  if(code.length == 18){    //18位身份证需要验证最后一位校验位
    var codeArr = code.split('');
    var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
    var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];
    var sum = 0;
    for (var i = 0; i < 17; i++){
      sum += codeArr[i] * factor[i];
    }
    if(parity[sum % 11] != codeArr[17]){
      alert("校验位错误");
      return null;
    }
  }
  //省份
  var province = zoneCode[code.substring(0, 2)];
  //生日
  // var birthday = code.substring(6, 10) + '年'
      // + code.substring(10, 12) + '月'
      // + code.substring(12, 14) + '日';
  var birthday = code.substring(6, 10) + '-'
      + code.substring(10, 12) + '-'
      + code.substring(12, 14);
  //性别
  var gender = '';
  if (code.length == 15){
    gender = code.substring(14, 15) % 2 == 0 ? '女':'男';
  } else if(code.length == 18){
    gender = code.substring(14, 17) % 2 == 0 ? '女':'男';
  }
  var info = {
    'province': province,
    'birthday': birthday,
    'gender': gender
  };
  return info;
}
